San Francisco woman's suit: BART officers used excessive force

The woman claims newly released video of the incident shows officers violently knocking her to the ground for no reason.

(CBS) -- Transit police in San Francisco face a lawsuit claiming they used excessive force on a drunken woman last year.

The woman claims newly released video of the incident shows officers violently knocking her to the ground for no reason. The encounter allegedly left her with broken bones, reports CBS News correspondent Ben Tracy.

In the new video, Megan Sheehan can be seen waiting for a train after a night of heavy drinking when Bay Area Rapid Transit police officers arrested her.

"I was so embarrassed when I saw the videos. I can't believe what I was saying. I was just so belligerent and foolish," Sheehan said.

Despite her behavior, she said, nothing she did justifies what happened next at the Santa Rita jail.